Question

Given below are two statements:
Statement (I): Perennial cropping systems are more suitable for conservation of natural enemies than annual cropping systems due to lesser disturbances and human activities
Statement (II): Perennial cropping systems are less suitable for conservation of natural enemies than annual cropping systems due to lesser disturbances and human activities
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement (I) and Statement (II) are correct
• B. Both Statement (I) and Statement (II) are incorrect
• C. Statement (I) is correct but Statement (II) is incorrect
• D. Statement (I) is incorrect but Statement (II) is correct

Hint:

Remember: Ecological stability supports biodiversity. Undisturbed perennial systems allow predator-prey dynamics to stabilize over multiple seasons, whereas highly disturbed annual systems favor fast-colonizing pests.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Conservation biological control focuses on modifying the agricultural habitat to encourage and protect naturally occurring beneficial predators and parasitoids.
The stability of the cropping system plays a key role in the survival of these beneficial populations.

Step 2: Detailed Explanation:
Let us analyze the two statements:
Statement (I):
Perennial cropping systems (such as orchards, vineyards, and plantations) are long-term habitats that experience minimal physical disturbance.
Unlike annual systems, they do not undergo annual tilling, planting, and harvesting, which can destroy insect habitats and overwintering sites.
The stable canopy, leaf litter, and root systems in perennial setups provide consistent shelter, alternative prey, and microclimates for natural enemies.
This makes perennial cropping systems highly suitable for conserving natural enemies.
Thus, Statement I is correct.
Statement (II):
Since perennial systems provide a more stable and less disturbed environment than annual systems, they are more suitable—not less suitable—for conservation biological control.
Annual crops represent highly disturbed, temporary habitats that force natural enemies to constantly migrate to find food and shelter.
Therefore, Statement II is incorrect.

Step 3: Final Answer:
Statement I is correct, and Statement II is incorrect.
Thus, the correct option is 3.